Battery pack



FIG. 1 is a front, left, upper perspective view of a battery pack showing our new design;

FIG. 2 is a rear, right, upper perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom side view thereof.

The broken line showing of selected elements represents unclaimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a battery pack, as shown and described. 